The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 08, 1991
Filed:
Aug. 09, 1988
Irl N Duling, III, Arlington, VA (US);
Daniel R Grischkowsky, Peekskill, NY (US);
Jean-Marc Halbout, Larchmont, NY (US);
Mark B Ketchen, Ossining, NY (US);
IBM Corporation, Armonk, NY (US);
Abstract
A communication system for transmitting and receiving terahertz signals has a emitter employing a resonant radiating structure connected to an ultrafast switch. The switch is a subpicosecond photoconducting switch coupled to a coplanar transmission line having a pair of approximately 1 micron wide A1 lines deposited on an SOS substrate. The transmission line is separated from the tip of the radiating structure by a photoconducting gap forming the switch and is driven by a laser pulse. Utilizing the gap excitation principle, the transmitting antenna radiates a freely propagating signal that may be received by an identical structure either on the same or on different substrates.